:root {
    --page-bg: #EAF2FB;
    --content-bg: #FFFFFF;
    --soft-bg: #F4F8FF;
    --soft-bg-2: #EDF5FF;
    --soft-bg-3: #E1ECF8;
    --blue: #2FA8F7;
    --blue-light: #45C7FF;
    --blue-dark: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --line: #D7E6F5;
    --shadow: 0 18px 48px rgba(45, 106, 160, .12);
    --shadow-soft: 0 10px 30px rgba(45, 106, 160, .09);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--page-bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link {
    position: fixed; left: 16px; top: -80px; z-index: 10000;
    background: var(--blue-dark); color: #fff; padding: 10px 16px; border-radius: 10px;
}
.skip-link:focus { top: 12px; }

.site-header {
    position: fixed; inset: 0 0 auto; height: var(--header-height); z-index: 1000;
    background: rgba(255, 255, 255, .92);
    border-bottom: 1px solid rgba(19, 124, 216, .08);
    backdrop-filter: blur(16px);
}
.desktop-header { height: 100%; display: flex; align-items: center; gap: 36px; }
.brand-logo { width: 154px; flex: 0 0 auto; }
.brand-logo img, .mobile-logo img, .drawer-logo img, .footer-brand img { width: 100%; height: auto; object-fit: contain; }
.core-nav { min-width: 0; flex: 1; display: flex; justify-content: center; align-items: stretch; gap: 8px; white-space: nowrap; }
.nav-link {
    position: relative; display: flex; align-items: center; padding: 0 13px;
    color: var(--text); font-size: 15px; font-weight: 700; transition: .2s ease;
}
.nav-link:hover { color: var(--blue-dark); background: var(--soft-bg); }
.nav-link::after {
    content: ""; position: absolute; left: 50%; bottom: 10px; width: 0; height: 3px;
    border-radius: 99px; background: var(--blue); transform: translateX(-50%); transition: width .2s ease;
}
.nav-link:hover::after, .nav-link.is-active::after { width: 26px; }
.nav-link.is-active { color: var(--blue-dark); }
.register-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 24px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    color: #fff; border: 0; border-radius: 999px; font-weight: 800;
    box-shadow: 0 9px 22px rgba(47, 168, 247, .25); transition: transform .2s ease, box-shadow .2s ease;
}
.register-btn:hover { transform: translateY(-2px); box-shadow: 0 13px 28px rgba(47, 168, 247, .32); }
.header-register { flex: 0 0 auto; }
.mobile-header { display: none; }

.channel-bar {
    position: fixed; z-index: 950; top: var(--header-height); left: 0; right: 0;
    background: rgba(244, 248, 255, .94); border-bottom: 1px solid rgba(19, 124, 216, .08);
    backdrop-filter: blur(12px);
}
.channel-scroll { display: flex; gap: 8px; overflow-x: auto; padding-top: 10px; padding-bottom: 10px; scrollbar-width: thin; }
.channel-scroll::-webkit-scrollbar { height: 4px; }
.channel-scroll::-webkit-scrollbar-thumb { background: #BED9EF; border-radius: 999px; }
.channel-pill {
    flex: 0 0 auto; padding: 5px 12px; border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 700;
    background: rgba(255,255,255,.74); border: 1px solid transparent; transition: .2s ease;
}
.channel-pill:hover, .channel-pill.is-active { color: #fff; background: var(--blue); border-color: var(--blue); }

.site-main { min-height: 70vh; padding-top: 132px; }
.section { padding: 42px 0; }
.section.compact { padding: 26px 0; }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 24px; }
.eyebrow { color: var(--blue); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { color: var(--title); line-height: 1.28; margin-top: 0; }
h1 { font-size: clamp(30px, 4vw, 52px); margin-bottom: 18px; }
h2 { font-size: clamp(24px, 3vw, 36px); margin-bottom: 12px; }
h3 { font-size: 20px; margin-bottom: 10px; }
p { margin-top: 0; }
.lead { color: var(--muted); font-size: 18px; max-width: 820px; }
.text-link { color: var(--blue-dark); font-weight: 800; }
.text-link:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.badge { display: inline-flex; padding: 5px 12px; border-radius: 999px; background: var(--soft-bg-2); color: var(--blue-dark); font-weight: 800; font-size: 13px; }

.hero-carousel-wrap { padding: 30px 0 20px; }
.hero-carousel {
    position: relative; overflow: hidden; background: #fff; border-radius: 30px;
    box-shadow: var(--shadow); min-height: clamp(220px, 36vw, 500px);
}
.carousel-track { position: relative; min-height: inherit; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.carousel-slide.is-active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.carousel-control {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px;
    border: 0; border-radius: 50%; background: rgba(255,255,255,.86); color: var(--blue-dark); font-size: 28px;
    box-shadow: 0 8px 24px rgba(16,43,70,.18); display: grid; place-items: center;
}
.carousel-prev { left: 18px; }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 3; display: flex; gap: 9px; }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.72); box-shadow: 0 0 0 1px rgba(19,124,216,.25); }
.carousel-dot.is-active { width: 26px; border-radius: 99px; background: var(--blue); }

.hero-panel, .content-card, .info-strip, .faq-item, .review-card, .notice-card {
    background: var(--content-bg); border: 1px solid rgba(19,124,216,.08); box-shadow: var(--shadow-soft);
}
.hero-panel { border-radius: var(--radius-lg); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; }
.hero-copy { padding: clamp(30px, 5vw, 64px); }
.hero-media { min-height: 420px; background: var(--soft-bg); display: flex; align-items: center; justify-content: center; padding: 28px; }
.hero-media img { width: 100%; max-height: 440px; object-fit: contain; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.secondary-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 22px; border-radius: 999px;
    color: var(--blue-dark); background: var(--soft-bg); border: 1px solid #CDE3F7; font-weight: 800;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.content-card { border-radius: var(--radius-md); padding: 24px; overflow: hidden; }
.content-card.media-card { padding: 0; }
.media-card .card-image { height: 220px; background: var(--soft-bg); padding: 16px; display: flex; align-items: center; justify-content: center; }
.media-card .card-image img { width: 100%; height: 100%; object-fit: contain; }
.media-card .card-body { padding: 24px; }
.quick-card { min-height: 190px; position: relative; display: flex; flex-direction: column; }
.quick-card .text-link { margin-top: auto; padding-top: 14px; }
.number-card strong { display: block; color: var(--blue); font-size: 34px; line-height: 1; margin-bottom: 14px; }
.info-strip { border-radius: 18px; padding: 22px 26px; color: var(--text); background: linear-gradient(120deg, #FFFFFF, #EDF7FF); }
.soft-section { background: rgba(255,255,255,.45); border-top: 1px solid rgba(19,124,216,.06); border-bottom: 1px solid rgba(19,124,216,.06); }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; }
.pill-list span, .pill-list a { padding: 7px 12px; border-radius: 999px; background: var(--soft-bg-2); color: var(--blue-dark); font-size: 14px; font-weight: 700; }
.check-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 25px; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue); font-weight: 900; }

.review-card { border-radius: 18px; padding: 22px; }
.review-card strong { display: block; color: var(--blue-dark); margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border-radius: 16px; overflow: hidden; }
.faq-item button { width: 100%; border: 0; background: #fff; color: var(--text); font-weight: 800; text-align: left; padding: 19px 52px 19px 20px; position: relative; }
.faq-item button::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--blue); font-size: 24px; }
.faq-item.is-open button::after { content: "−"; }
.faq-answer { padding: 0 20px 20px; color: var(--muted); }

.page-hero { padding: 34px 0 30px; }
.page-hero .hero-panel { background: linear-gradient(135deg, #FFFFFF 0%, #F1F8FF 100%); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.breadcrumbs a { color: var(--blue-dark); }
.article-card { background: #fff; border-radius: 24px; padding: clamp(24px, 5vw, 54px); box-shadow: var(--shadow-soft); }
.article-card h2 { margin-top: 30px; }
.article-card h2:first-child { margin-top: 0; }
.article-card ul { padding-left: 22px; color: var(--muted); }
.article-card li { margin-bottom: 8px; }
.callout { padding: 20px 22px; border-left: 4px solid var(--blue); background: var(--soft-bg); border-radius: 0 16px 16px 0; color: var(--muted); }
.contact-box { display: grid; gap: 12px; padding: 20px; border-radius: 16px; background: var(--soft-bg); }
.contact-line { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 10px; border-bottom: 1px dashed #C9DFF2; }
.contact-line:last-child { border-bottom: 0; padding-bottom: 0; }

.service-float {
    position: fixed; z-index: 800; right: 18px; top: 50%; transform: translateY(-50%); width: 118px;
    background: rgba(255,255,255,.96); border: 1px solid rgba(19,124,216,.10); border-radius: 18px; padding: 12px;
    box-shadow: var(--shadow-soft); display: grid; gap: 8px; backdrop-filter: blur(10px);
}
.service-float a:not(.register-btn), .service-float button {
    border: 0; background: var(--soft-bg); color: var(--blue-dark); border-radius: 10px; padding: 9px 8px; font-size: 13px; font-weight: 800; text-align: center;
}
.service-float .register-btn { min-height: 38px; padding: 0 10px; }
.mobile-bottom-nav { display: none; }

.site-footer { margin-top: 42px; background: var(--footer); color: var(--footer-text); padding: 52px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.45fr repeat(3, 1fr); gap: 32px; }
.footer-brand img { width: 160px; filter: brightness(0) invert(1); }
.footer-brand p { color: #BFD3E5; max-width: 420px; margin-top: 18px; }
.site-footer h2 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.site-footer a { display: block; color: #CFE1EF; margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-notice { margin-top: 28px; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); color: #BFD3E5; font-size: 14px; }
.footer-notice p { margin: 0; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; color: #9FB9CE; font-size: 13px; }
.footer-bottom a { display: inline; margin: 0; }

.drawer-overlay { position: fixed; inset: 0; z-index: 1100; background: rgba(16,43,70,.45); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.mobile-drawer {
    position: fixed; z-index: 1200; left: 0; top: 0; bottom: 0; width: min(86vw, 360px); background: #fff;
    transform: translateX(-102%); transition: transform .24s ease; overflow-y: auto; box-shadow: 18px 0 48px rgba(16,43,70,.2);
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 18px 12px; border-bottom: 1px solid var(--line); }
.drawer-logo { width: 146px; }
.drawer-close { width: 38px; height: 38px; border: 0; border-radius: 50%; background: var(--soft-bg); color: var(--blue-dark); font-size: 26px; }
.drawer-nav { padding: 10px 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
.drawer-link { padding: 10px 12px; border-radius: 10px; color: var(--text); font-weight: 700; font-size: 14px; }
.drawer-link:hover, .drawer-link.is-active { background: var(--soft-bg); color: var(--blue-dark); }
.drawer-register { margin: 12px 18px 28px; width: calc(100% - 36px); }

@media (max-width: 1260px) {
    .service-float { right: 8px; width: 108px; }
    .core-nav { gap: 2px; }
    .nav-link { padding: 0 9px; }
}

@media (max-width: 1024px) {
    :root { --header-height: 68px; }
    .desktop-header, .channel-bar, .service-float { display: none; }
    .mobile-header { height: 100%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 16px; }
    .menu-toggle { justify-self: start; width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--soft-bg); display: grid; align-content: center; gap: 5px; padding: 0 11px; }
    .menu-toggle span { display: block; height: 2px; border-radius: 99px; background: var(--blue-dark); }
    .mobile-logo { width: 136px; }
    .mobile-register { justify-self: end; min-height: 38px; padding: 0 18px; }
    .site-main { padding-top: var(--header-height); }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-media { min-height: 320px; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / 4; }
    .mobile-bottom-nav {
        position: fixed; z-index: 900; left: 10px; right: 10px; bottom: 10px; display: grid; grid-template-columns: repeat(4, 1fr);
        background: rgba(255,255,255,.96); border: 1px solid rgba(19,124,216,.12); border-radius: 18px; padding: 7px;
        box-shadow: 0 12px 35px rgba(16,43,70,.18); backdrop-filter: blur(14px);
    }
    .mobile-bottom-nav a { display: grid; place-items: center; color: var(--muted); font-size: 11px; font-weight: 800; border-radius: 12px; padding: 5px 2px; }
    .mobile-bottom-nav span { font-size: 14px; color: var(--blue-dark); line-height: 1.2; }
    .mobile-bottom-nav a.is-active { background: var(--soft-bg); color: var(--blue-dark); }
    .site-footer { padding-bottom: 96px; }
}

@media (max-width: 760px) {
    .container { width: min(100% - 24px, 1180px); }
    .section { padding: 30px 0; }
    .hero-carousel-wrap { padding-top: 18px; }
    .hero-carousel { border-radius: 20px; min-height: clamp(190px, 57vw, 330px); }
    .carousel-control { width: 38px; height: 38px; font-size: 23px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    .hero-copy { padding: 28px 22px; }
    .hero-media { min-height: 250px; padding: 18px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .section-head { display: block; }
    .section-head .text-link { display: inline-block; margin-top: 8px; }
    .content-card { padding: 20px; }
    .media-card .card-image { height: 190px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-grid > div:last-child { grid-column: auto; }
    .footer-bottom { display: grid; text-align: center; justify-content: center; }
    .article-card { border-radius: 20px; }
    .contact-line { display: grid; gap: 3px; }
}

@media (max-width: 430px) {
    .mobile-logo { width: 118px; }
    .mobile-register { padding: 0 14px; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .hero-actions a { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; }
}